Configure Google Workspace to forward mail to SkyConnect

Overview

Step 1: Configure a route for the sub domain

1. Navigate to Admin > Apps > G Suite > Gmail > Hosts
2. Create a new mail route.
   1. Give a suitable name to the route
   2. In Specify Email Server, select Single Host and enter the subdomain and port 25. For eg:- sky.vaultastic.io:25
   3. Select the Perform MX Look up on host
   4. Select Require mail to be transmitted via a secure TLS connection 
   5. Select require CA signed certificate
   6. Select Validate certificate hostname
   7. Click Test TLS connection. Wait for the test to complete
   8. On successful completion. Save the route.
      
      

Step 2: Add routing Rules

1. 
   
   1. Navigate to Admin > Apps > G Suite > Gmail > Advanced Settings > Routing
   2. Create a mail routing rule
      1. Give a suitable name to the Rule
      2. In Email messages to affect, select all options Inbound, Outbound, Internal- sending, Internal-receiving)
      3. In setup, DO NOT Modify message.         
      4. Go to the Routes section, Select Change Routes and from the drop down list select the route created in STEP 1
      5. In the Envelop Recipients section, select "Replace domain". In the edit box, enter the name of the subdomain.
         
      6. Click on Show Options
      7. Under A. Address Lists, select Use address lists to bypass or control application of this setting
      8. Select Only apply this setting for specific addresses / domains
         
      9. If you have already defined an address list of SkyConnect users, else credit one at this point. The address list to contain the email ids of all users to be hosted on SkyConnect.
         
      10. Under the Account types to affect , Select Users, Groups, and Unrecognized / Catchall options
      11. Save the rule.